7.5 month old won’t bear weight on her feet

Most of the time, she buckles when I stand her up.

I put her to the couch today and made her hold on. She stood for maybe 2-3 seconds before buckling, and I had to catch her.

There’s a 1 year waiting list to see a Paediatrician here, so I was hoping someone has had this same situation (or knows of someone) and what happened with it?

Other than that, she’s doing well (sits unaided for a bit before falling because she’s flailing herself backwards excitedly).

She also jumps like there’s no tomorrow in her bouncer.

If you have any questions, I will edit them into my OP, so keep an eye out.